L sherman



-w.'1. SHERMAN. :NSERUNG BRSLES IN RUBBER PADS APPLICATIQN HLEG NOV. i3, i216. l I

Patented Dee. 9,1919

Unirse sTA'rss PATENT orrron.

' WILLIAM T. SHERMAN, OF TROY, NEW YORK, ASSIGNOR, B Y MESNE ASSIGNMENTS, T0

HENRY L. HUGHES CO. INC., OF NEW YORK, Iii'. Y., A. CORPORATION OF NEW YORK.

' INSERTING BRlS'lLES IN RUBBER PADS.

Specification of Letters Patent. Patented Dec. 9, 1919.

Application led November 13, i916. Serial' No. 130,953.

. To all whom z't may concern:

Be it known that I, WIL-LUM T. SEER#- MAN, a citizen oi the United States, residing at Troy, county ol' Rensselaer, and State of New York, have invented certain new and useful Improveinents in Inserting Bristles ,in Rubber Bade, of which the following is a specification.

Reference may be had to 1the accompanying drawings, and the reference characters marked thereon, which form a part of this specification. Similar characters refer lo similar parts in the several figures therein.

This -invention relates to the manufacture of bristle-supporting rubber pads suitable for use in hair brushes and the like.

In such pads the bristles are inserted separately .or in, groups of two or more throughsmall -apertires in the pad, the inner ends ofthe brist es being provided with heads or osets which are covered in some suitable manner with a backing-sheet, whereby the bristles arepermanentlymounted inthe rubber pad.

The present invention relates more par.- ticularly to inserting the bristles through thevapertures in the rubber pad.

The principal object of theinvention is to lsimplify and cheapen the operation of inserting the bristles in the apertures in the rubber pad.

Other objects will appear in connection with the following description.

' therein.

Figure l of the drawings is a plan view of one of the rubber pads perforated preparatory to having the bristles inserted Fig. 2 is a vertical cross-section of the lower clamp-plate resting upon a suitable support.

Finn` 3 is a similar section of the rubber pad shown in Fig'. 1. y

Fig. 4 is a similar section of the upper clamplplate.

Fig. 5 is a similar section of the plate 'carrving the bristle-.guiding tubes.

Fig'. 6 is a similar section showing the rubber padapprlied to tbe lower clampv plate, shown in Fig. 7 is a similar 'section showing tbe upper clamp-plate superimposed upon tbe rubber pad. as shown in Fig, 6.

Fig. 8 is a similar section showing the plate having the bristle-,guiding tubes su perimpostd upon trie upper elampplate, 'as

shown in Fig. '7, with the respective tubes inserted through the flaring apertures in -l the upper clamp-plate and the apertures in the pad, into the corresponding openings in the lower clamp-plate.

Fig. 9 is a view similar to Fig. 8, showingr thebristles inserted through the tubes. Fig. 10 is a Similar section with the bristleguiding tubes withdrawn -leaving the bristles inserted in the apertures in the rubber pad.

Fig. ll is a plan view of the upper clamp.- plate.

Fig. l2 is a view in cross-section of the rubber pad after the bristles have been in serted in the apertures in the pad.

Referring to .the drawingsfwhereinis' shown al preferred form of apparatus for carrying out the invention, 1, is a. pad of soft vulcanized rubberyor the like, provided with a series of perforations, 2, each adapted to receive and closely i,it a single bristle or a group-of two .or lmore bristles as may be desire The apparatus for inserting `bristles in the apertures, 2, in the pad, 1, comprises a lower clamp-plate 3,. an upper clampplate, 4, and a-plate, 5, carrying a series of bristle-guiding tubes, 6.

The 4lower clamp-plate, 3, is adapted to rest upon a suitable support, 7, leaving beneath the clamp-plate a. free space, 8, into which the lower ends of the bristlesmay extend. T bis'lower clamp-plate is provided with a. series of openings, 9, corresponding in number and location with 'the perforate openings, 2., in the rubber pad 1.

The upper-clamp-plate, 4, isprovided with a series of perforations, `1 0, corresponding in number and location with the openings; 9, in the-lower clamp-plate and lche perforatios, 2, in the rubber pad.

The plate, 5, carries a series of bristle! guiding tubes, 6, corresponding in'number and location .with Ithe openings', 9. `in the tubes.

accordance with my novel methodsis as follows:

The rubber pad, 1, is superimposed upon thelower clamp-plate, 3, with the perforations, 2, ofthe pad in alineinent With the respective openings 9, in the lower clampplate, as shown in Fig. 6. The upper .clamp-plate, 4, is then superimposed upon the rubber pad with the perforations l0. ot

the upper clamp-plate in alinement with the respective perforations, 2, in the rubber A pad, as shown in Fig. 7.

For convenience in alining the apertures and openings the lower clamp-plate 3, is preferably provided with two or more up- 26 wardly projecting guide-pins, 11, and the l rubber pad and the upper'clamp-plate are provided with correspondingly located apertures, 12, adapted to receive the respective guide-pins, 11 whereby when the clamp .80 plates and pa are assembled, as shown in Figs. 7, 8 and 9, the apertures in thc pad will Abe alined with the respective apertures in the upper clamp-plate and the respective openings in the lower clampfplate.

yAfter the rubber pad has been clamped between the clamp-plates, 3 and 4, as shown in Fig. 7 the plate` 5, is superimposed upon the. upper clamp-plate, It, with its tubes 6,

inserted through the respective Haring ap- 40 ertures, 10, in the upper clamp-plate, 4, `and the respective apertures, 2, in the pad. into the respective openings, 9, in the lower clamp-plate, as shown in Figs. 8. 9 and 10.

In thus inserting the bristle guiding l tubes, 6, they are forced through the, some.

what smaller apertures, 2, in the `rubber i pad. the yielding nature of the rubber permitting the apertures to temporarily enlarge sufficiently for this purpose. The ends of the tubes 'are of such size and form as to readily enter and expand the respective apertures, 2, for the purpose stated.

As the rubber pad o'ers more or less resistance to the passage of the tubes, 6. therethrough. I prefer to make the tubes of ditferent lengths, so that they will enter the lpad successively and notall at the same in .stant.

After the tubes. 6` .have been inserted in th(` rubber pad in the manner above described, bristles are inserted through the respective tubes, 6. by hand or by suitable apparatus. each tube receivingr a single bristle or a group ot two or more bristles. as may be desired. The tubes protect the bristles `from contact with the walls of the perforations, 2, in the rubber pad permitting the bristles to be inserted with practically no resistance.

After all of the tubes, 6, have been supin plied with bristles the plate, 5, is removed, withdrawing the tubes, 6, and leaving the bristles inserted through the apertures, 2, in the 'rubber pad, as shown in Fig. l0. As the tubes are gradually withdrawn from the respect-ive apertures, 2, in the rubber pad, the elasticity of the rubber causes the apertures 2, to contract and closely engage the respective bristles.

After the plate, 5, with its tubes G, has 80 been removed, the upper clamp-plate., 4, is removed.

The bristles are of such length that when l the upper clamp-plate 4,' is removed the upper ends of the bristles project a sullicient distance above the rubber pad to permit said ends to be bent over at right. angles, :1s-shown at 1st, in Fig. 12, or otherwise headed; to preveiit the bristles from being withdrawn downwardly through the pad.

After the bristles have been inserted in the pad in'the manner above set forth, the pad may be completed in any known manner as by cementing or otherwise securing upon the back of the pad a iexible baelrin'gsheet, 95 15 of fabric, rubber or the like which cov- 1 ers the heads of the bristles and prevents the bristles from backing out through the apertures' in the pad.

For certain purposesA of the invention the Aguiding-plate` 4, maybe omitted and the tubes, 6. may be forced directly tlnmgh the apertures in the rubber pad, this being` pos-` sible, due to the support afforded to the rubber pad by the plate, 3.

One ofthe objects of the tubes, 6, is to vstretch the rubber, bordering the respective apertures` 2, so as to either prevent Contact of the bristles with the rubber as thebristles are being inserted o.' to enlarge the no apertures sutliciently so that the bristles can be freely'inserted therethrough; and said tubes may be forced into or through the respective apertures to whatever degree vis necessary for this purpose.

I make no claim herein to the apparatus /shown and described herein as the same forms the ubject-matter-ota separate ap- 'plication fi ed by me October 23. 1919, S

rial No. 332,718, as a division ot the present al'iplieation.. y

llhat .l claim as new and desire to secure b v Letters ?atent is:

\\1. Thai, improvement in theart of insert-ingT bristles in an apertured elastic pad which consists in supporting the pad on one side with a plate provided with an openingrr opposite the aperture in the pad; inserting into the aperture in the patl from its other side s bristlesguiding tube, larger E36 ing 'brstifs iii :i rubber pat! 'which consists 11i confining ine pad between two plates, .one pi'ovided with L pazfoiation and the oiviieir Witi'i an opening oppnsite said pei-fo# ration? iiissrting iimugh said pei'mitiozi in. he @im pizie, und tbs iiiiei'posed paid, iii-nio nl? fr iii the. mimi Piate, a brisitieguiidiig tube? ami im@ or more bristles piotected by 'cie time imm aantast with die rubiiei' m ai: iiiimv'eiimi; the iii-l; insaies in.' a 'iuiibei-*pad whim soiisiss ging' 3 rubber pad Vith a. .payinbion, conf g the pad between irwsipiates, Giie piff'ivichi with a. perforation registeriiig Wi'ii pi'foifiiisii in tim pmi, and iii@ Ginkel* with im *pairing opposii said i'egispmforaiens in tb@ one pla-te and the i1 @here pzid and inserting through said, i2 fiiius in 21h@ wie pint/e and the paid intr; tf1@ @@nimg iii, :the @thai pinta7 bristle 'miizxl 0f iii@ pad suifimmdizig guiding zube and one or" mehr@ biistfas mated. by the *ube imm @im fici- Wi'tii iiie: Wills of the parfoiiwtion in. th@ iubbai pad mi@ iien Wiizid'awing ih@ tub@ eziviiig zh' i'iibiiai pmi Thai; improvement in the :im of inset"- ing bristles in a, pifointad soi-iubbei' @mi which consisis in stretching h@ iiifiteizii surrounding ai perforation iii ih@ pmi is eiilaig@ said. pm'foraitioii, iiieriiiig time 0i more bristles; within Said perfomzin? :m Uien pei'iiiitizing `thea miiii'izii @i the @ad if@ @o 'aci upon 'thi-3 i'fisfteffi biisfe, 0i iiius'uef.

Thai; iiiipi'ovei'miii; in Sina am mi i1isi:- ing bristles in ai perforated rubber pad, which cansits iii forcinn t'liiiiugii said peii'oi'ation a bristi-guidi 13u50 larger 15min iii@ pi'iowtoii 'bheiebj-,f s-ie'ciii'gg tit ma tioii iiisci'ifmg one or bris gaia?. ubi-f, so inseiieci 'ciroaigii in ih@ psi-d, and than 'Wihd gjmimitt'iiig the mwtei'izil u. "im pad to wir Mari upm the, inse/mimi biiilie m* bifistiles.

n estimony whereof, have Legami() sst. .y hund this 3 91511 day (if Septeinbfai, 1916.

said almiu in said iadb@ 

